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General Characteristics

Hexafluoroethane is a colorless, nontoxic, nonflammable liquefied gas. Its critical temperatures is at normal room temperature. It is an excellent dielectric. However, toxic decomposition products may be formed upon thermal or electrical breakdown.

Physical Information

Molecular Weight

138.01

Flammability Limits in air

Nonflammable

Specific Gravity,
Gas @ 70&degF(21.1&degC),
1 atm(Air=1)

4.823

Density,
Gas @ 70&degF
(21.1&degC), 1 atm

0.358lbs/ft^3 (5.73g/l)

Specific Volume,
Gas @ 70&degF
(21.1&degC), 1 atm

2.79ft^3/lb (0.174l/g)

Melting Point @ 75.1 psia
(518 kPa)

-149.3&degF (-100.7&degC)

Boiling Point @ 1 atm

-108.8&degF (-78.2&degC)

Critical Temperature

67.5&degF (19.7&degC)

Critical Pressure

432 psia (29.8 bar)

Toxicity

Non-toxic, asphyxiant only